Pbessttbe-contbolled switch



E. E. TAEUBERT. PRESSURE CONTROLLED SWITCH.

APPLICATION FILED OCT 28. I914.

1,304,521 7. Patented May 20, 1919.

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E. E. TAEUBERT.

PRESSURE CONTROLLED SWITCH.

APPUCATION FILED OCT. 28. 1914.

1,304,217; Patented May 20, 1919,

4 SHEETS-SHEET 2.

E. E. TAEUBERT. PRESSURE CONTROLLED SWITCH. woman man 001.221.1914.

1,304,217. Patented May 20,1919.

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E. E. TAEUBERT, PRESSURE CONTROLLED SWITCH.

APPLICATION FILED OCT- 28,19I4. 1,304,217. Patented May 20, 1919.

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PRESSURE-CONTROLLED SWITCH.

Specification of Letters Patent.

Patented May 20, 1919.

Application filed October 28. 1914. Serial No. 869.138.

To all whom it may concern:

Be it known that I, EDMUND E. TAEU- BERT, a citizen of .the United States, residing at Los Angeles, in the county of Los Angeles' and State of California, have invented certain new and useful Improvements in Pressure Controlled Switches, of which the following is a specification.

This invention relates to pressure controlled switches and has for its object to provide a device of this character of improved construction especially designed for automatically opening and closing the circuit through an electrically operated air compressor to maintain air under predetermined pressure. in the air reservoir of the air system of an electric railway car.

lVith this and other objects in view the invention consists in the novel construction, arrangement and formation of parts which will be hereinafter specifically described, claimed and illustrated in the accompanying drawing, in which:

Figure 1 represents a side elevation of the device complete.

Fig. 2 represents a top plan view thereof.

Fig. 3 represents a vertical sectional view on the line 3 3 of Fig. 1.

Fig. 4 represents a fragmental sectional view on the line H of Fig. 2.

Fig. 5. represents a vertical central. sectional view of the main air valve, casing and pressure controlled operating means therefor removed.

Referring to the drawing in detail, wherein similar reference numerals designate corresponding parts throughout the several views, the numeral 6 designates a pair of spaced end members preferably formed of sheet metal connected by the horizontally disposed rods 7 and constituting the main frame. The lower ends of the end members 6 are bent outwardly whereby the device may be rigidly secured in operative position and the upper ends 8 are turned in wardly. A vertically disposed partition 9 is secured on the rods 7 by nuts 10, or the equivalent securing means, substantially centrally between the end members 6. The upper end 11 of the partition 9 is directed at right angles and disposed in a horizontal plane and is secured to the switch base 12 connecting said angularly directed end 11 and the inwardly directed end 8 01 one of the side members, the other side 3 member 6 being connected with the angularly directed end 11 of the partition by a plate 13 having the ends 14; directed upwardly in spaced relation to provide bearing members. A shaft 15 is rotatably mounted in the members 14 and pivotally supports a pair of arms 16 pivotally mounted at their opposite ends on oppositely directed pins 17 carried by the switch blade holder 18. The opposite extremities of the holder 18 are connected with spaced transversely disposed members 19 to which the blades 20 are secured, and the medial portion of said holder carrying the pivot pin 17 is enlarged and slidable vertically on a vertically disposed bar 21 pivotally mounted at its lower end in a post 22 rigidly secured to one end member 6 and extended upwardly through the switch base 12. A nut 23 is threaded on the upper end of the bar 21 and provides an adjustable abutment for one end of a spring 24 engaged at the opposite end against the enlarged medial portion of the holder 18 and normally retaining the latter, together with the blades 20, in lowered position. The blades 20 are adapted to be moved between spring contact members 25 secured to the base 12 to complete the circuit to an electrically operated compressor, as will be hereinafter set forth. A valve casing 26 is secured by its reduced threaded end 27 in the partition 9 and is formed with a longitudinally extending opening 28 extending from the end opposite the reduced end 27 to a point clearly adjacent the latter. A transverse opening 29 constituting an outlet port communicates with the inner end of the longitudinal opening 28, and a valve seat 30 is formed at the junction of the openings 28 and 29. Intermediate the ends of the longitudinal opening 28 an opening 31 is formed transversely through the body or casing 26 and constitutes an air inlet for the casing. A threaded sleeve 32 is fitted in the threaded end of thelongitudinal opening 28, and a disk 33 is fitted on the projecting end of the sleeve 32 against the end of the casing 26. A diaphragm 34.- is positioned on the sleeve 32 against the disk or plate 33 and is secured in position by a nut 35 fitted on said sleeve and provided with a circular recess on the face adjacent the diaphragm 34, receiving a suitable packing ring. A second diaphra m 36 is arranged in spaced relation to the diaphragm 34 and is secured against the head 37 formed with a threaded shank 38 by a nut 39 constructed similarly to the nut 35 securing the first diaphragm 34 in operative position. The diaphragms 34 and 36 are of circular formation and the circumferential edges 40 are converged and extended a distance outwardly in contact. The contacting edges of the diaphragms are firmly and reliably held in a groove 41 formed in the inner face of an annular retaining member 42. An annular packing ring 43 is positioned between the diaphragms 34 and 36 and is normally held against the converged edges 40 by the air pressure in the chamber formed between the diaphragms and communicating with the longitudinal opening 28 of the casing 26 through the opening between the threaded sleeve 32 and the stem or shank 38 of the head 37. The threaded shank 38 extends through the sleeve 32 and a distance into the opening 28, having an opening 44 in its inner end in which is seated a spring 45 normally retaining theenlarged end 46 of the valve stem 47 in extended position against the stop collar 47 fitted on the end of the shank 38. The opposite end of the stem 47 is formed with an annular flange partially inclosing the valve 48 suitably se cured thereto and adapted to engage against the seat 29. Movement of the valve 48 is controlled by the diaphragm 36 through the stem 47 and shank 38 and in normal position of the diaphragm the valve 48 is closed against the seat 29. A member 50 is positioned over the head 37 and is formed with a pair of spaced bifurcations 51 receiving the valve operating rod or bar 51 pivoted at its lower end to a post 52 secured in the adjacent end member 6 and having an angularly directed upper end 53 positioned through an opening 54 in one of the bearing members 14. The pivoted member 51 is connected intermediate the connection withthe members 50 and its upper end with one spring 54 of a series, the terminal of the spring being hooked in'an opening 54 formed in the member 51. The opposite end of the spring. 54 is connected with a vertically disposed lever 56 pivotally mounted centrally in a post 57 secured to the adjacent end member 6. The lever 56 is connected at its lower end with a second spring 58 which latter is connected at its opposite end with the adjacent end of a horizontally disposed lever 59 pivotally mounted in a post 60 secured to the other side member 6. The opposite end of the lever 59 is connected with one end of a spring 62 connected at its opposite end with a vertically disposed lever 61 pivotally connected with the end members 6 carrying the lever The upper end of the lever 61 is connected with the last spring 63 of the series anchored to a post 64 on the end member 6.

' A casing 66 is secured to the plate 13 by screw 67 and is formed with an angular opening 68 extending from the side wall through the top thereof. A tubular member 69 is threaded into the open end of the horizontally disposed portion of the opening 68 and is formed on its inner end with a seat for a valve 70 normally retained in closed position by a spring 71 engaged at one end against a distributer plate 72 and en aged at its opposite end against a flange 73 formed on the stem 74. The extremity of the stem 74 is formed with a head 75 engaged against a screw 76 ad]ustably positioned in the angularly directed end 53 of the member 51 and secured in position by suitable locknuts 77. The free end of the angularly directed arm 53 is preferably twistedso as to present a vertical blade shaped portion 53 as shown in Figs. 1 and 2 for the mounting of the'screw 76.

The vertically disposed portion of the opening 68 is threaded at its upper end and a sleeve 78 is fitted therein. A pair of diaphragms 79' are connected at their circumferential edges by an annular member 80, the

lower diaphragm 79 being secured against the top face of the casing 66 by a nut 81. The top diaphragm of the. pair 79 is secured on an intermediate sleeve 82 by a nut 81-. The lower diaphragm of a pair 83 is also secured on the intermediate sleeve 82 in contact with the top diaphragm of the pair 79, and the circumferential edges of the diaphragms 83 are secured together by an ahl'll'll'ar member 84. A head 85 is disposed against the top diaphragm of the pair 83 and is formed with a threaded depending shank over which is engaged a nut 81for securi'ngthe top diaphragm 83 against the head 85. Annular packing rings 87 are disposedbetween the pairs of diaphragms 79 and 83, and the securing nuts 81 are formed on their faces adjacent the diaphragms with annular cavities or recesses receiving suitable packing rings. The shaft 15 is formed with a cam 88 connecting the pivoted ends of the arms 16 and normally engaging the head 85 of the diaphragms. The opening 68 of the casing 66 is connected with the valve controlled outlet port 29 of the casing 26 through the pipe connection 90, and, in use the inlet port 31 of the casing 26 is connected with the air reservoir of the system not shown in the drawings. The feed wires of the electrically operated conductor of the system are connected with the spring contact members 25 and the circuit through said contact is ompleted when the blades 20 are moved downwardly to the position illustrated in Fig. 1, when the air in the chamber 68 is exhaustedwhile the increase of air pressure opens the electric circuit. By providing a plurality of intercommunicating diaphragm chambers 83 and 79 respectively, a more reliable movement for operating the electric switch and a. greater freedom from the influence of leakage is obtained than by the use of only one diaphragm.

In operation, air, under predetermined pressure, from the reservoir (not shown), enters the chamber 28 of 4 the casing 26 through the inlet port 31 and passing into the chamber formed between the diaphragms 34 and 36 forces the latter apart and carries the valve 48 off of the seat 29 through the connection of the stem 47 of the valve with the outer diaphragm 36. Movement of the outer diaphragm 36 is also communicated to the pivoted bar 51 through the member 50 and operates against the tension of the series of springs 54, 58, 62 and 63 which are connected by the several levers 56, 59 and 61. By utilizing the series of springsand levers, the pull is uniformly distributed over the entire series and the expansion of the respective springs, as when the pressure of air in the casing 26 exceeds a predetermined value, is only very slight as'compared with the expansion of a single spring of approximately the length of the frame. The outward movement of the pivoted bar 51 'permits the valve in the casing 66 to .close, thus closing the opening or chamber 68 in said casing. The valve 48 being opened, the air in the chamber 28 flows through the outlet port 29, and the pipe 90 into the chamber 68 of the upper casing 69, filling the spaces between the pairs of diaphragms 79 and 83 causing the latter to expand and lift the cam 88, arms 16, holder 18, blades 20 opening the circuit to the air compressor (not shown). As the air in the reservoir is consumed by the operation of the air brake or similar pneumatically operated apparatus, the diaphragms 34 and 36 are moved to normal position by the series of springs 54, 58, 62 and 63 and the levers 56, 59, and 61 which normally tend to draw said diaphragms together. The movement of the diaphragms 34 and 36 to normal position closes the valve 48 and opens the valve 70 by the pivoted bar 51 swinging inwardly under the influence of the series of springs 54, 58, 62, and 63, and levers 56, 59, and 61 and pushes the end of the stem 74 inwardly. When the valve 7 O is opened the air in the chamber 68 is exhausted through the tubular member or sleeve 69 and the pairs of diaphragms 79 and 83 move to normal position, assisted by the spring 24, thus permitting the holder 18 to move downwardly with the arms 16 and close the circuits between the spring contact-s 25.

What I claim'is:

1. In a pressure regulator, a pair of valve casings, each having separate inlet and outlet ports, diaphragms at one end of each of said casings, controlling means in said casing, the diaphragms of one of said casings being connected to the controlling means of said casings, means on the diaphragms of the other casing operating a switch, and a fluid conduit controlled by said controlling means and connecting the outlet of one casing to the inlet port of the other casing.

2. In a pressure regulator a pair of valve casings each having separate inlet and outlet ports, diaphragms at one end of each of said casings, a controlling member in each of said casings, the diaphragm of one casing being connected to the controlling member of said casing, an velectric switch engageable with the diaphragm of the other casing, means on the outside of the diaphragm of the first casing operably connected to the controlling member of the switch carrying casing, and a fluid conduit between the two casings.

3. In a pressure regulator a valve chamber, a plurality of parallel diaphragms in spaced relation to each other closing one end of said valve chamber and inclosing intel-communicating spaces, switch operating means on the outside of said diaphragms, separate inlet and outlet means on said chamber, and a valve controlling said outlet means, a second valve chamber and diaphragms closing one end of said second valve chamber and separate inlet and outlet means on said second valve chamber,

fluid carrying means connecting the outlet of the second with the inlet of the first chamber and means secured to the inside of the diaphragms of the said second chamber controlling the outlet of said second chamber, and means at the outside of the diaphragms of the said second valve chamber controlling the outlet valve of the first mentioned valve chamber.

4. In a pressure regulator two hollow intercommunicating casings, diaphragms connected to the cavities of said casings, inlet and outlet ports respectively in each of said casings and controlling means slidably mounted in each of said casings, a lever between said casings operably connected to the controlling means of said casings, parallel intercommunicating diaphragm compartments in one of said casings, and an electric switch operably connected to said compartments.

5. In a pressure regulator in combination, a casing having an inlet and an exhaust port, fluid operated diaphragms on said casing, a valve chamber and a valve in said casing for controlling the exhaust, a switch operable by said diaphragms, a second casing, a fluid through the outlet of the second mentioned casing, and connections between said controlling means and the valve Controlling the exhaust port of the first mentioned casing.

6. In combination, a frame, a casing positioned in said frame having inlet and outlet ports therein, a valve in said outlet port, a pair of fluid operated diaphragms communicating with said casing, a pivoted bar engaged against one of said diaphragms, a series of springs and interposed pivoted connecting levers connected with said pivoted bar for normally retaining said diaphragms in close relation, means arranged Within said casing and operable by one of said diaphragms to open and close said valve, a second casing mounted in said frame above said first casing, fluid operated diaphragms on said casing, a switch operable by said diaphragms, a connection between said second casing and the outlet port of said first. casing, a valve controlled exhaust port in said second'casing and operable by the end of said pivoted bar. 1

7-. In combination, a frame, a casing positioned in said frame having inlet and outletports, fluid operated diaphragms communicating with said casing, a valve in said outlet port, a connection between one of said diaphragms andvsaid valve,-a second casing mounted in said frame above said first casing, a fluid operated diaphragm on said second casing, a pair of pivoted arms, a cam carried by the pivoted ends of said arms and engaging said diaphragm, a switch operable by said arms, and a connectionbetween the valved outlet port of said first casing and saidsecond casing.

8. In combination, a casing, fluid operated diaphragms associated with said casing, a switch operable by said diaphragms, said casing having an exhaust port therein, a second casing, a plurality of diaphragms associated with said second casing, said second casing having an outlet port therein, means connecting said outlet port with the first mentioned casing, and normally closed operable valves arranged within and adapted to close the outlet and exhaust ports in the first and second mentioned casings.

9. In combination, a frame, a casing on said frame having an exhaust port therein, fluid operated diaphragms on said casing, a switch operable by said diaphragms, a second casing supported in said frame having an inlet port and exhaust port, fluid conducting means connecting the exhaust port of the second mentioned casing with the first mentioned casing, a valve within the last mentioned casing and controlling the second mentioned exhaust port, fluid operated diaphragms associated with the second casing, and means connecting the second mentioned diaphragms with the second mentioned exhaust valve for controlling the admission of fluidto the conducting means.

10. In a pressure, regulator in combination, a frame, a casing supported in said frame and having an outlet port, and a valve in said casing controlling the outlet port, diaphragms arranged upon the casing, a switch operable by a the diaphragms, a valve chamber surrounding said valve, a second casing mounted in the frame having separate inlet and outlet ports, fluid conducting means connecting the second mentioned casing with the valve chamber of the first mentioned casing, diaphragms associated with the second mentioned casing, a valve mounted in the second mentioned casing and operable directly by the second mentioned diaphragms, and controlling the outlet of said second casing, and means controlled by the second mentioned diaphragms for controlling the first mentioned valve.

11.'In combination, a frame, a series of parallel springs, means anchoring one end of the spring at one end of the series to the frame, a seriesof levers pivotally connected with the frame and connecting the terminals of the springs, a lever pivotally mounted in the frame'having connection with the free end of the spring at the other end of the series, a'casing supported upon the frame having an exhaust port therein, a valve controlling the port, diaphragms mounted upon the casing, a switch operable by the diaphragms, said lever being adapted to engage and open the exhaust valve, and fluid operated means controlling the action of the lever.

12. In a pressure regulator two intercommimicating casings, each having a cavity, controlling means movably arranged at one end of the cavity of each casing, and resilient diaphragm walls at the other end of each cavity, inwardly and outwardly extending projections on the two sides respectively of the diaphragm walls of the cavity of one casing and substantially in line with each other, the inwardly extending projection having a sliding connection with the controlling means of said cavity, a lever guided in the outwardly extending projections of the diaphragm walls of said cavity, means adjustably secured at the other end of said lever and in line with and engageable with the controlling means of the other casing, and switching means operable by the diaphragms walls of said latter casing.

13. In a fluid pressure regulator two intercommunicating casings each having a cavity and resilient diaphragm walls at one end of the cavity, and controlling'means slidingly arranged in each cavity, inwardly and outwardly extending projections on the two sides respectivelyofthediaphragm wall of the cavity of one casing, the inwardly extending projection having a sliding connection with the controlling means of said cavity, a lever guided in the outwardly extending projection of said diaphragm wall, means adjustably secured at the free end of said lever and in line with and engageable with the controlling means of the cavity of the other casing, levers parallel with the first mentioned lever, and springs connecting the parallel levers with the first mentioned lever, and switching means operable by the diaphragm walls of the last mentioned casing.

14. In a fluid pressure regulator two casings at a distance from each other, each having a cavity and resilient diaphragm Walls at one end of the cavity, and controlling means slidingly arranged in each cavity, inwardly and outwardly extending projections on the two sides respectively of the diaphragm wall of the cavity of one casing, the inwardly extending projection having a sliding connection with the controlling means of said cavity, a lever guided in the outwardly extending projection of said diaphragm wall, means adjustably secured at the free end of said lever and in line with and engageable with the controlling means of the cavity of the other casing, levers parallel with the first mentioned lever, and springs connecting the parallel levers with the first mentioned lever, and switching means operable by the diaphragm walls of the last mentioned casing, and fluid conducting means between the cavities of the casings.

In testimony whereof I aflix my signature in presence of two witnesses.

EDMUND E. TAEUBERT.

Witnesses:

M RY P. SCHNEIDER, MARGARET J AQUAY.

Copies of this patent may be obtained (or five cents, each, by addressing the Commissioner of intents, wuhington, D. 0. 

